In a study of the effect of playing video games on sleep quality, researchers randomly assigned some participants to play an up-tempo video game for either one or three hours before bed. Other participants had no engagement with electronics in the time before bed. Then, the researchers assessed all the participants' sleep quality (e.g., number of awakenings, percentage of time in deep sleep) during an overnight sleep study. In this experiment, the time spent playing video games (e.g., one or three hours) is the ________.

Answer:

(10 × 6) + ((14 - 10)×6)/2 + 3 × (6/2)^2= 99

Answer:

answer is 1

Step-by-step explanation:

2-1=1

Answer:

the answer is 1.24 (my answer need to be 20 characters long so I'm adding this)

Answer:

no it is rational

Step-by-step explanation:

Answer:

no, it isn't intist

Step-by-step explanation:

since there are two number with no common factorsfactorsfactorsfactorsfactors

Answer:

the answer is b

Step-by-step explanation:

Answer:

60;

Step-by-step explanation:

it's solverable by making something soulfulness solution so you have to kuoioty 6 Times 11 makin 71 times that by the card elected.

Answer:

4x³ - 29x² + 11x -1

Step-by-step explanation:

( 4x - 1) ( x² - 7x + 1 )

4x³ - 28x² + 4x - x² + 7x -1

4x³ - 29x² + 11x -1

Answer:

-4/5

Step-by-step explanation:

Divide a percent by 100 and remove the percent sign to convert from a percent to a decimal.

The shortcut way to convert from a percentage to a decimal is by removing the percent sign and moving the decimal point 2 places to the left.

Answer: -4.5

Step-by-step explanation:

-18/4 is the same as -9/2

we can get rid of the negative for now and just think about 9/2

then do 9 divided by 2.

2 divides into 9 four times, with remainder 1

2 divides into 1.0 0.5 times

you'll get 9/2 = 4 + 0.5 = 4.5

bring the negative back in, so..

-18/4 = -4.5

Answer:

x+y=-4=y=-x-4

3x-(-x-4)=12

4x-4=12

4x=16

x=4

4+y=-4

y=-4

solution

(4,-4)

690th QUESTION LETS GOOO!!!

Hope This Helps!!!

Answer:

x is 2 and y is -6

Step-by-step explanation:

3x-y=12

x+y=-4

Adding both equations to eliminate y

4x=8

x=2

Substituting

2+y=-4

y=-6

x is 2 and y is -6

Proving that this answer is correct:

Substituting x is 2 and y is -6

3*2-(-6)=12 6+6=12 12=12 True

2-6=-4 -4=-4 True

Therefore, x is 2 and y is -6

The distance between two points is the number of units between them.

The distance between pier A and pier B is 339 ft

From the complete question, we have the following sine equation

[tex]\frac{a}{\sin(A)} = \frac{b}{\sin(B)}[/tex]

So, the equation becomes

[tex]\frac{200}{\sin(27)} = \frac{b}{\sin(50)}[/tex]

Evaluate the sine ratios

[tex]\frac{200}{0.4540} = \frac{b}{0.7693}[/tex]

Evaluate the quotient

[tex]440.53 = \frac{b}{0.7693}[/tex]

Make b the subject

[tex]b = 440.53 * 0.7693[/tex]

[tex]b = 339[/tex]

Hence, pier A is 339 feet from pier B

Read more about distance at:

https://brainly.com/question/11744248

Answer:

339 ft

Step-by-step explanation:

took the test

Answer:

-5/6

Step-by-step explanation:

you can use the equation y2-y1/x2-x1 to find the slope of the line

Answer:

x + y = 150

x = 80 + y

Step-by-step explanation:

x (guitar) + y (piano) = total 150 min

x (guitar) = 80 min + y (piano)

123 / 116 = 1.06

so he weighs 106% of his former weight

6% weight increase

Answer:

-27

Step-by-step explanation:

I maybe wrong or right. Well, t(n) adds up to -7, -17, so i think -27.  hopes this helps.

Answer:

   Find the intersection of

y

>

x

5

and

y

>

|

x

−

2

|

+

x

4

.

y

>

x

5

and

y

>

|

x

−

2

|

+

x

4

Step-by-step explanation:

Answer:

-25.5

8x3=24

but we still have the .5 so we multiply that by 3 which equals to 1.5 add that to 24 which makes 25.5 and because only one of the numbers was negative it turns 25.5 into -25.5.

Answer:

0.02

Step-by-step explanation:

Answer:

0.02

Step-by-step explanation:

34 divided by 1,265 will result in the answer becoming a decimal.

0.02 is the final answer.

Answer:

-3/4

Step-by-step explanation:

The rate of change is the change from each perfect point to another.
Here, the points are (0,3) and (4,0).

To get from (0,3) to (4,0), you must go down 3 units and over to the right 4 units. This is the unit of change or -3/4 in this case.

Hope this helps you understand this better. If it doesn't, please let me know through the comment area and I will try to give better examples/help. :)

Answer: -3/4, from y = -3/4 x + 3

Step-by-step explanation: The answer is based on the y=mx+b format, 3 being b. You find b on the (0,—), the center y axis. You know it’s negative because as it moves towards the larger numbers on the x axis, the slope is decreasing. Then you connect how many times the slope goes down and over as a whole number. It goes down 3 times and over 4 times. This helps you identify the slope and the function.

Answer:

See below.

Step-by-step explanation:

106*34.05=3609.3

-hope it helps

Let's say the original radius was "r", so the circumference is 2πr and the area is πr².

Now when you double the radius, the you get a new circle with radius 2r, circumference 2π(2r) = 4πr, and area π(2r)² = 4πr².

Answer:

6.07874538483 × 10^11

Step-by-step explanation

Answer:

2.84

Step-by-step explanation:

20.00 - 17.16 : If you think of it with zeros it might help

2.84 when solved

Answer:

[tex]20 - 17.16[/tex]

[tex] = 2.84[/tex]

hope it helps you

make me brainliest if u r satisfied

Answer:

[tex]{ \tt{volume = length \times height \times width}}[/tex]

[tex]{ \tt{volume = (12 \times 5 \times 4) \: {in}^{3} }} \\ \\ { \boxed{ \tt{ \: volume = 240 \: {in}^{3} \: }}}[/tex]

Answer:

Neil pays 1/3 of the total bill, which is 1/3 * 72 or 24. He then tips 20% of that which is 24 * 0.2 or 4.80. So in all he paid

24+4.80 or 28.80

Answer:

Ratio is 1:4 or 1 dog for 4 cat

Step-by-step explanation:

Data :

Dogs = 5

Cats = 20

To find ratio

  20/ 5 = 4

S0

Relationship is 1:4

Answer:

640

Step-by-step explanation:

PRT

___ principal=3200, Rate=4, Time=5=

100 3200x4x5

_________=640.

100

Answer: Radha travels 80Km with 1 liter of petrol

Step-by-step explanation:

720÷9=80